Button Score Counter Design
Budget: $30 – $250 USD
I am developing a wearable electronic device for sports such as padel or tennis that allows players to easily record points during a match. The system consists of a small button worn on the player’s shirt that communicates wirelessly with a courtside speaker. When the button is pressed, the system updates the score and announces it audibly.
Current Stage:
Prototype development. The goal is to design a functional, low-cost, and manufacturable electronic system that can later be scaled to production.
System Components:
1. Wearable Button Unit
* Small, lightweight device clipped to the player's shirt
* Single push button input
* Bluetooth Low Energy (BLE) communication
* Rechargeable battery (Li-Po)
* USB charging circuit
* RGB LED status indicator:
* Green: Device ON
* Flashing Red: Charging
* Green (steady): Fully charged
* Low-cost design is important
2. Speaker Unit
* Receives signals from the button via Bluetooth
* Plays pre-recorded audio announcing the score
* Rechargeable battery-powered
* Designed for outdoor sports court use
Key Functional Requirements:
* Single press: Add point to player
* Double press: Add point to opponent
* Reliable Bluetooth communication within a standard sports court distance (~20–30 meters)
* Simple and robust hardware design
* Cost-efficient components suitable for future mass production
What I Need from the Freelancer:
* Complete electronic schematic design
* Component selection (cost-optimized BOM)
* Power supply and battery charging circuit design
* PCB layout suitable for prototyping and later manufacturing
* Recommendations for reliable and low-cost components
* Files compatible with tools such as Proteus, KiCad, or Altium
Constraints / Priorities:
* Keep the design as low-cost as reasonably possible
* Use widely available components
* Focus on reliability and simplicity
* This is the first prototype, not the final commercial version
Current Stage:
Prototype development. The goal is to design a functional, low-cost, and manufacturable electronic system that can later be scaled to production.
System Components:
1. Wearable Button Unit
* Small, lightweight device clipped to the player's shirt
* Single push button input
* Bluetooth Low Energy (BLE) communication
* Rechargeable battery (Li-Po)
* USB charging circuit
* RGB LED status indicator:
* Green: Device ON
* Flashing Red: Charging
* Green (steady): Fully charged
* Low-cost design is important
2. Speaker Unit
* Receives signals from the button via Bluetooth
* Plays pre-recorded audio announcing the score
* Rechargeable battery-powered
* Designed for outdoor sports court use
Key Functional Requirements:
* Single press: Add point to player
* Double press: Add point to opponent
* Reliable Bluetooth communication within a standard sports court distance (~20–30 meters)
* Simple and robust hardware design
* Cost-efficient components suitable for future mass production
What I Need from the Freelancer:
* Complete electronic schematic design
* Component selection (cost-optimized BOM)
* Power supply and battery charging circuit design
* PCB layout suitable for prototyping and later manufacturing
* Recommendations for reliable and low-cost components
* Files compatible with tools such as Proteus, KiCad, or Altium
Constraints / Priorities:
* Keep the design as low-cost as reasonably possible
* Use widely available components
* Focus on reliability and simplicity
* This is the first prototype, not the final commercial version